William kiekwood



(No Model.)

W. KIRKWOOD.

RADIATOR.

No. 313,082. Patented Marp, 1885.

llniren rafrrs Patent rrrfcn,

VVILLIAM KIRKVOOD, OF GUELPH, ONTARIO, CANADA.

RDIATOR.

SPECIPICATION forming part of Letters Patent No. 313,032, clted March 3,1885.

Application filerl October 16, 188i. (No model.)

To alliwhom it may conccrn:

Be it known that I, WILLIAM KInKWooD, of the city of Guelph, in thecounty of Wellington, in the Province of Ontario, Canada, plumber, haveinvented certain new and useful Improvements in Radiators; and Idohereby declare that the following is a full, clear, and exactdescription of the same.

The object of the invention is to design a radiator in which either hotwater or steam may be used, and in which theheating-surface is soarrang'ed by radiation from the outer jacket of the radiator, but alsofrom itsv interior, w signed to act as a hot-air heater; and it consistsin the peculiar combination and the construction and arrangement ofparts hereinafter more fully described and claimed.

The drawing' represents two sections of my improved radiator, onesection being shown in section to eXhibit its interior construction,-while the outside of the other is exposed.

A represents a tube open at both ends, and preferably supported by thehollow base-plate B, which should be scalloped at its bottoml orperforated, in order to fully admit fresh air, 'which will circulatethrough the tube A'when it becomes heated. This tube A is placed Withinthe Jacket or larger tube O. The collar a, placed at each end of thetube A, fills the space between the outer jacket, O, and the inner tube,A. These collars a, it will be noticed, are a short distance from eachend of the tubes. This outer space is filled up with any suitablecement, so as to form a steamtight joint at each end of the space formedbetween the tube A and the outer casing, O. An annular enlargement, Z),is formed at each end of the `jacket O, at the point where the supply orconnecting,` pipes D are attached to the said Jacket, so that where thesteam or water enters the jacket a larger space is provided, to enableit to freely circulate around the inner pipe, A, immediately upon itsentrance. This annular enlargement b is important for the satisfactoryworking of my improved radiator, as the circulation aroundthe spacesbetween the two tubes is thereby greatly improved.

that not only is heat seeured hich is de-` lt will be seen that as manytubes A G as Patentrd in Canada October' 24, 1884, No. 20,429.

desired may be arrang'ed in connectionwith each other, as indicatechtoconstitute as large or as small a radiator as will be required.

B' is aflaring cap placed over th tube O, as shown, and is designed toreceive aslab or covering, as dcsired. This cap is scalloped to formoutlets for the heated air from the pipeA, as will be readilynnderstood.

It will also be seen from this description that the hot water or steamadmitted through the pipes D will not only heat the room by radiationfrom the sides of the jacket '0, but will also heat the air passingthrough the inner tube, A, so that each tube becomes a hot-air heater,by which arrangement I not only secure all the advantages of an ordinarysteam \or hot-water radiator, but also obtain the benefits of a seriesof hot-air fiues. Gonsequently I obtain the benefit of a hot-airheatimg-surface as well as a hot-water or steam one.

I also altach irnportance to the fiaring cap -B' having air-outlets, forby its use a slab or covering` can be placed over the top of the tubes,so as to completely cover the same and I prevent dirt, &c., falling`therein, and yet allow the heated air to escape into the room.

I am aware that an air tube provided with Shoulders arranged Within asteam-'tube and having a cemented joint has heretofore been proposed.

Iam also aware that the outer or steam tube has been provided withenlargements, and I therefore do not claim such, broadly. v

I am also aware of the Patent No. 227,517, and make no claim to theconstruction shown therein as formin` part of my invention.

Vhat I clairn as my invention is- 1. The continuous hollow base-plate B,provided with air-inlets above its bottom, the outer tubes, C, supportedand connected by said base-plate, and provided with enlargements Z), andthe inner tubes, A, suspended concentrically within said tubes C, saidinner tubes, A, being formed independent of each other, and the supplyor connecting pipes D connecting' the outer tubes at their enlargements,substantially as and for the purpose specified.

2. The hollow perforated base-plate B, the outer tube, O, supportedthereby, the tube A,

e top of the IOC ' placed within said tube, and having collars a,

placed Within Said tube O, and provided with collars a, the spacebetween the collars and the outer end ot' the pipes being filled with acement, substantially as and fot` the purposes i speefied. o

Toronto, September 27, 1884.

WILLIAM KIRKWOOD. In presence of- CHARLES O. BALDWIN, J As. E. MAYBEE.

said tube' G having annnlar cnlargement b, and provided with a fiai'ingcap, B', having air-outlets b', in combination with a slab 01' coverng,and the snpply-pipes D, substantially as and for the purpose specified.

3. In combination with the perforated baseplate B, the flaring cap B',and a slab or covering supported by said Cap, the tube O, supported bysaid base-plate, and the tube A,

